Gerhard H. Verdoorn

Toxicity of diclofenac to <i>Gyps</i> vultures

Gerry E. Swan, Richard Cuthbert, Miguel Ángel Quevedo et al. · Biology Letters · 2006 · 287 citations · Full text

Persistent organochlorine pesticides detected in blood and tissue samples of vultures from different localities in South Africa

Erika van Wyk, Herman van der Bank, Gerhard H. Verdoorn et al. · Comparative Biochemistry and Physiology Part C Toxicology & Pharmacology · 2001 · 56 citations

Tissue Samples, Pesticide-residue Analysis, South Africa +7

Selected mineral and heavy metal concentrations in blood and tissues of vultures in different regions of South Africa

F.H. van der Bank, Ellané van Wyk, Gerhard H. Verdoorn et al. · South African Journal of Animal Science · 2001 · 45 citations · Full text

Metal Contamination, Immature Birds, Comparative Toxicology +16

Using camera-trapping to investigate the use of a tree as a scent-marking post by cheetahs in the Thabazimbi district

Kelly Marnewick, Gerhard H. Verdoorn · 2006 · 44 citations

Animal Behaviour, Specific Tree, Behavioral Sciences +12

Dynamics of haematology and blood biochemistry in free-living African whitebacked vulture (Pseudogyps africanus) nestlings

Erika van Wyk, Herman van der Bank, Gerhard H. Verdoorn · Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology · 1998 · 36 citations

Biology, Animal Physiology, Animal Study +8